Supercharging and scavenging internal-combustion engine



July 27, 194s.

Filed July 5, 1944 SURERCHARGING AND SCAVENGING INTERNAL-COMBUSTION ENGINE E. MATTlcE 2 Sheets-Sheet l WWW ' July 27, 1948 H. E. MATTICE 2,446,094

SUPERCHARGING AND SCAVENGING INTERNAL-COMBUSTION ENGINE Filed July 5, 1944 2 sheets-sheet :2

Inventor HAROLD MATT/CE,

@M/W M351@ i Patented July 27, 1948 ,UNiTQEDj STATES PATE-NTV `nvrnianai.-ooMBUsirIoN ENGINE A I'Harqla aMatticeEureka, Calif. p y y p Application July s, 1944, seria1Nc.543,57o I This invention relates to Vnew and useful improvements in a method and apparatus for supercharging andscavenging internal Icombustion engines preferably of thetwo cycle type in a simple and expeditious Imanner.

The principalfobject of the present invention is to provide a method whereby some of the products of combustion are utilized from one. cylinder to anotherfor `the purpose of supercharging the latter and wherein some of the products of combustion arenused from one Acylinder of an engine to another for the purpose of expediting the exhaust burned gases;4

Another importantobject of the invention is to provide unusually simple structural improvements on conventional internal combustion engines to accomplish the purposes stated.

Other objects and advantages of the invention will become apparent to the reader of the following description. I I

. In the drawings:

Figure 1 represents a fragmentary top plan view of a two-cycle engine showing the improvements installed. l

Figure 2 is a fragmentary side elevationalview of the structure shown in Figure 1. I 1 I `Figure 3 is a horizontal sectional view taken on the line 3-3 of Figure 2." j I x I 4Figure 4 lis a horizontal sectional View taken onIthe line 4-4 of Figure 2. 4 y

Figure 5 is a fragmentary Ivertical sectional View through one of the cylinders. t .I

Referring to the drawings wherein like numerals designate likeparts, it can be seen that numeral 5 rdenotes generally a two-cycle valveless type engine,

The engine 5 briefly consists of a crankcase 6, cylinders 1, 8, exhaust pipes 9, Ill for the cylinders, a carburetor II having a fuel pipe I2 connected to a horizontally ,disposed manifold I3, therpipe. I2a connecting., to the` manifold I3 at the intermediate portion of the? latter. Thus the manifold I3 has a portion a leading to the cylinder 1 and a portion b leading to the cylinder 8. Each cylinder has a spark plug I4.

In carrying out the present invention, a tube I5 extends from the head of the cylinder 8 to the portion a of the manifold I3 leading to the cylinder 1. A second tube I6 extends from the head of the cylinder 1 to the portion b of the intake manifold I3.

A tube I1 extends from the head of the cylinder 'I into the exhaust pipe III of the cylinder 8, where it is provided with a jet I8. A tube I9 extends from the head of the cylinder and into e solaims. (ci. 12s- 119) l the exhaust pipe 9 of thecylino'ler4 lwhere .itvisI provided with a jet 20. I I I I I .I Jets I 5a, Ilia are provided on the intake manifold ends of the tubes I5, I6. I e I In the operation of the apparatus, as the piston I in the cylinder 8 movesup `against compression,

the piston in the cylinder I'I `uncovers Irst the exhaust port 2l of its cylinder,I thenthe fuel inlet port at the manifold I3, some gasesIIf-rom cylinder 8 being forced into the tube I5. I I

When combustion occurs in the cylinder 8 an the pressure rises, more gases are Vjammed into the tube I5. As these gases are rushed from the jets II5Ial into the manifold portionI a'.I and then ing detonation or ping, makes it .possible to useI a higher compressionratio'. Onthe nextI strokeA the piston in the cylinder I compressesthe charge and forces some gases into the tube I6 Iwhich,=`in'I turn, supercharges fuel into ther cylinder 18, Icomf pleting the cycle. I

Obviously, the tubes I'Iv Iand` IS function insubstantially the same manner, but with the result that the exhaust burned gases through the ex-I haust pipes 9 `and I0 are expedited bythe impulse of the pressure of gases delivered by theIjets I8, 2Il thereby producing a desirable scavengingref.-I

fect.

While the foregoing specification sets forth the*- invention in specific terms,I it is tobe understood that numerous changes in` the shape, size and materials may be resorted .to without departing from` the spirit and `scopeof the invention as claimed hereinafter. I I I I Having described the invention, what is claimed as new is: y f

1. An arrangementv for supercharginginternal combustion engines with a plurality of cylinders operating with a, phase difference, each cylinder being provided with a cylinder head closing the combustion space of the said cylinder, and further provided with inlet and exhaust openings, a reciprocating piston, a fuel manifold for charging said cylinder, and an exhaust manifold, the reciprocating piston of one of the cylinders 'being in position for its suction phase when the piston of another cylinder is in position for the combustion phase, means for conducting the gases under the pressure produced during combustion in one cylinder to the intake manifoldoi the cylinder ther provided with inlet and exhaust openings,H a reciprocating piston, a fuel manifold for.charg.v

ing said cylinder and an exhaust manifold, the reciprocating piston of one of the cylinders being in position for its suction phase, when the pistonl Y of another cylinder is in position forthe. combustion phase, a pressure conduit leading from the cylinder head of each Vcylinder to the fuel manifold of another cylinder: for conducting gases under .combustion pressure from the. first-named cylinder when in the combustion. phase to the last-namedA cylinder: when in its suction phase, a nozzle in said fuel manifold connected with the said. pressure conduit for converting the pressure of the gasesrintc velocity and for producing a jet,y said nozzle being arranged to direct its jet. into the fuel mixture and. towards the inlet opening of the cylinder.`

3. An arrangement for supercharging internal combustion engines with a plurality of cylinders operating in. phase relatedl pairs, each cylinder being provided with a` cylinder head closing the combustion space of, the said cylinder, and fur ther provided with` inletV and exhaust openings,.a reciprocating piston, a fuel manifold for charging said. cylinder and an exhaust manifold, the reciprocating piston of one of the cylinders. in a phase related pairy being in its exhaust and suction phase when the piston of 'another cylinder-:is near the end of its compression. phase, and vice versa, direct pressure fluid communication pipes leading from the. cylinder head of eachv cylinder ofthe phase. reated. pairl into the exhaust manifold of the other cylinder: of 'said pair and nozzle means, converting pressure into velocity at .the end vof thepipes` located Vwithin the exhaust manifolds for 4accelerating and entrainng the exhaustL gases. i

4. An arrangement for supercharging and for accelerating the flow of gases into and outof the cylinders'of internal combustion engines with a plurality of cylinders operating at a phase difference, eachcylinder being provided with a cylinder.1 head closing the combustionfspace of the cylinder and with intake andexhaust openings, a reciprocating pistonwithin each cylinder, a fuel manifold .and an exhaust manifold, connection pipes leading from the cylinder head of one cylinder; to the fuel 'manifold of .another cylinder, connection pipes leading from the cylinderhead of theV rstnamedcylinder. to the exhaust manifold of the last-named cylinder, and nozzles arranged at the end of both connection pipes, said nozzles being so directed as to accelerate the ilow of the gases.

5. An arrangement for supercharging and for accelerating the iiow of gases into and out of a two cycle two cylinder combustion engine, with cylinders operating at a phase difference, each cylinder, being; proyided'. with.` intake and exhaust openings andwith a cylinder` head Vclosing the combustion chamber, a reciprocating piston in each of said cylinders, intake and exhaust ducts associated Withzsaid intake and exhaust openings, two connection pipes leading from the head of each cylinder to the intake duct and to the exhaust duct of-'the other cylinder, respectively, and

nozzles attached to said pipes for directing a jet of gases under high pressure into the inflowing and outflowing gases of each cylinder to accelerate their flow and raise; their pressure and the in andout flowingvolume per time unit.,

6. A method forsuperchargingand forimprovyj ing the scavenging of internalzcombustion engines. provided. with: cylinders', with cylinder head'si closr` ing the combustion space :of the. :cylinder-1. with intake. and exhaust ports, withv reciprocating pistons and with. intake and exhaust. manifolds. which consists conducting gases. underV combustion pressure from the ccmbustion space .of the cylinder to the intake and; exhaustmanifold's, in converting thepressureinto. velocity and-in injecting the gases; at; high velocityinto. thegase stream moved within the intakeA and exhaust manifold by thev pressuresf corresponding to. the cycle, thus increasing'the volume. and'fvelocitypf the gas chargeandtof thedischargedzexhaust:

gases.

HAROLD .Ei i

REFERENCES CITED: .1

The following references are of record in the file of this patent:I Y

UNITED STATES PATENipy Eng1andl 193e 

